/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/gemcutter/Termination.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/4_plus_thr/pc6.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:59:00,198 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:59:00,249 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 16:59:00,252 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:59:00,252 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:59:00,252 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 16:59:00,252 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 16:59:00,264 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:59:00,264 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:59:00,264 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:59:00,265 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:59:00,265 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:59:00,265 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:59:00,265 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:59:00,265 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:59:00,265 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:59:00,265 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:59:00,265 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:59:00,265 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:59:00,265 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 16:59:00,265 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:59:00,265 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:59:00,266 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:59:00,266 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:59:00,266 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:59:00,266 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:59:00,266 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:59:00,266 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:59:00,266 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:59:00,266 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:59:00,266 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:59:00,266 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:59:00,266 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:59:00,266 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:59:00,266 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:59:00,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:59:00,266 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:59:00,268 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:59:00,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 16:59:00,268 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 16:59:00,268 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 16:59:00,269 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:59:00,269 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:59:00,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:59:00,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:59:00,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:59:00,490 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:59:00,491 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:59:00,492 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/pc6.c.bpl [2025-04-26 16:59:00,493 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/pc6.c.bpl' [2025-04-26 16:59:00,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:59:00,513 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:59:00,513 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:59:00,513 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:59:00,513 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:59:00,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:00" (1/1) ... [2025-04-26 16:59:00,543 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:00" (1/1) ... [2025-04-26 16:59:00,547 INFO L138 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:59:00,548 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:59:00,549 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:59:00,549 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:59:00,549 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:59:00,556 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:00" (1/1) ... [2025-04-26 16:59:00,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:00" (1/1) ... [2025-04-26 16:59:00,559 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:00" (1/1) ... [2025-04-26 16:59:00,559 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:00" (1/1) ... [2025-04-26 16:59:00,561 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:00" (1/1) ... [2025-04-26 16:59:00,561 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:00" (1/1) ... [2025-04-26 16:59:00,567 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:00" (1/1) ... [2025-04-26 16:59:00,568 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:00" (1/1) ... [2025-04-26 16:59:00,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:00" (1/1) ... [2025-04-26 16:59:00,576 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:59:00,577 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:59:00,577 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:59:00,577 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:59:00,578 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:00" (1/1) ... [2025-04-26 16:59:00,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:59:00,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:00,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:00,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-26 16:59:00,628 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:59:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:59:00,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:59:00,629 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:59:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:59:00,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:59:00,629 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:59:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:59:00,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:59:00,629 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:59:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:59:00,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:59:00,629 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 16:59:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 16:59:00,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 16:59:00,629 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-04-26 16:59:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-26 16:59:00,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-26 16:59:00,629 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2025-04-26 16:59:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-04-26 16:59:00,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-04-26 16:59:00,630 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 16:59:00,674 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:59:00,677 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:59:00,796 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:59:00,796 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:59:00,809 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:59:00,809 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:59:00,810 INFO L201 PluginConnector]: Adding new model pc6.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:59:00 BoogieIcfgContainer [2025-04-26 16:59:00,810 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:59:00,811 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:59:00,811 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:59:00,816 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:59:00,817 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:59:00,817 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:59:00" (1/2) ... [2025-04-26 16:59:00,818 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6eb28fe8 and model type pc6.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:59:00, skipping insertion in model container [2025-04-26 16:59:00,818 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:59:00,818 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pc6.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:59:00" (2/2) ... [2025-04-26 16:59:00,819 INFO L376 chiAutomizerObserver]: Analyzing ICFG pc6.c.bpl [2025-04-26 16:59:00,896 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-04-26 16:59:00,933 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 16:59:00,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 16:59:00,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:00,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:00,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-26 16:59:00,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 62 transitions, 166 flow [2025-04-26 16:59:01,028 INFO L116 PetriNetUnfolderBase]: 6/50 cut-off events. [2025-04-26 16:59:01,032 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-26 16:59:01,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 50 events. 6/50 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 126 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2025-04-26 16:59:01,037 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 62 transitions, 166 flow [2025-04-26 16:59:01,042 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 50 transitions, 136 flow [2025-04-26 16:59:01,042 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 63 places, 50 transitions, 136 flow [2025-04-26 16:59:01,047 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 16:59:07,805 WARN L140 AmpleReduction]: Number of pruned transitions: 229932 [2025-04-26 16:59:07,806 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 16:59:07,806 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 16072 [2025-04-26 16:59:07,806 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:41 [2025-04-26 16:59:07,806 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:48829 [2025-04-26 16:59:07,806 WARN L145 AmpleReduction]: Times succ was already a loop node:11302 [2025-04-26 16:59:07,806 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:44940 [2025-04-26 16:59:07,806 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 16:59:07,960 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 64943 states, 64942 states have (on average 2.415247451572172) internal successors, (in total 156851), 64942 states have internal predecessors, (156851), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:07,967 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:59:07,967 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:59:07,968 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:59:07,968 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:59:07,968 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:59:07,968 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:59:07,968 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:59:07,968 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:59:08,170 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 64943 states, 64942 states have (on average 2.415247451572172) internal successors, (in total 156851), 64942 states have internal predecessors, (156851), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:09,128 INFO L131 ngComponentsAnalysis]: Automaton has 3174 accepting balls. 48234 [2025-04-26 16:59:09,129 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:59:09,129 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:59:09,135 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:59:09,135 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:59:09,135 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:59:09,214 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 64943 states, 64942 states have (on average 2.415247451572172) internal successors, (in total 156851), 64942 states have internal predecessors, (156851), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:09,793 INFO L131 ngComponentsAnalysis]: Automaton has 3174 accepting balls. 48234 [2025-04-26 16:59:09,793 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:59:09,793 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:59:09,795 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:59:09,795 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:59:09,799 INFO L752 eck$LassoCheckResult]: Stem: "[98] $Ultimate##0-->L17: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[165] L17-->L34: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" [2025-04-26 16:59:09,800 INFO L754 eck$LassoCheckResult]: Loop: "[122] L34-->L36: Formula: (< v_x1_1 v_z1_1) InVars {x1=v_x1_1, z1=v_z1_1} OutVars{x1=v_x1_1, z1=v_z1_1} AuxVars[] AssignedVars[]" "[124] L36-->L37: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[126] L37-->L34: Formula: (= (+ v_c_2 1) v_c_1) InVars {c=v_c_2} OutVars{c=v_c_1} AuxVars[] AssignedVars[c]" [2025-04-26 16:59:09,805 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:09,805 INFO L85 PathProgramCache]: Analyzing trace with hash 4164, now seen corresponding path program 1 times [2025-04-26 16:59:09,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:09,809 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378224061] [2025-04-26 16:59:09,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:09,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:09,847 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:59:09,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:59:09,851 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:09,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:09,851 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:09,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:59:09,853 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:59:09,853 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:09,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:09,863 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:09,865 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:09,865 INFO L85 PathProgramCache]: Analyzing trace with hash 151003, now seen corresponding path program 1 times [2025-04-26 16:59:09,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:09,865 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189147750] [2025-04-26 16:59:09,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:09,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:09,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:09,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:09,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:09,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:09,874 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:09,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:09,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:09,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:09,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:09,878 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:09,879 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:09,879 INFO L85 PathProgramCache]: Analyzing trace with hash 124170936, now seen corresponding path program 1 times [2025-04-26 16:59:09,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:09,879 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095970883] [2025-04-26 16:59:09,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:09,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:09,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:59:09,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:59:09,886 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:09,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:09,886 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:09,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:59:09,888 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:59:09,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:09,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:09,892 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:10,019 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:10,024 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:10,024 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:10,024 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:10,024 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:59:10,024 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:10,024 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:10,025 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:10,025 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:59:10,025 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:10,025 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:10,045 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:10,052 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:10,099 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:10,099 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:59:10,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:10,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:10,103 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:10,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 16:59:10,109 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:10,109 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:10,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:10,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:10,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:10,149 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:10,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 16:59:10,152 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:10,152 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:10,195 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:59:10,195 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=-3}, {c=-3}, {c=7}] Lambdas: [0, 1, 1] Nus: [1, 0] [2025-04-26 16:59:10,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:10,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:10,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:10,210 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:10,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 16:59:10,213 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:10,213 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:10,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:10,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:10,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:10,248 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:10,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 16:59:10,255 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:10,255 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:10,336 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:59:10,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:10,341 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:10,341 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:10,341 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:10,341 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:10,341 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:59:10,341 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:10,341 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:10,341 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:10,341 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:59:10,341 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:10,341 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:10,342 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:10,349 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:10,391 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:10,399 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:59:10,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:10,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:10,405 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:10,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 16:59:10,409 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:59:10,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:10,423 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:10,423 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:10,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:10,423 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:10,433 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:10,433 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:10,436 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:59:10,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:10,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:10,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:10,446 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:10,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 16:59:10,447 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:59:10,457 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:10,457 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:10,457 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:10,457 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:10,457 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:10,458 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:10,458 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:10,460 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:59:10,463 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:59:10,463 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:59:10,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:10,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:10,465 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:10,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 16:59:10,467 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:59:10,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-04-26 16:59:10,470 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:59:10,471 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:59:10,471 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z1, x1) = 1*z1 - 1*x1 Supporting invariants [] [2025-04-26 16:59:10,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-04-26 16:59:10,478 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:59:10,498 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:10,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:59:10,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:59:10,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:10,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:10,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:59:10,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:10,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:10,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:10,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:10,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:10,518 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:59:10,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:10,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:59:10,572 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:59:10,650 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 64943 states, 64942 states have (on average 2.415247451572172) internal successors, (in total 156851), 64942 states have internal predecessors, (156851), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:12,003 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 64943 states, 64942 states have (on average 2.415247451572172) internal successors, (in total 156851), 64942 states have internal predecessors, (156851), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 132996 states and 323034 transitions. Complement of second has 6 states. [2025-04-26 16:59:12,004 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:59:12,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:12,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2025-04-26 16:59:12,013 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 122 transitions. Stem has 2 letters. Loop has 3 letters. [2025-04-26 16:59:12,013 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:12,013 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 122 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 16:59:12,014 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:12,014 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 122 transitions. Stem has 2 letters. Loop has 6 letters. [2025-04-26 16:59:12,014 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:12,014 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 132996 states and 323034 transitions. [2025-04-26 16:59:13,249 INFO L131 ngComponentsAnalysis]: Automaton has 1809 accepting balls. 20241 [2025-04-26 16:59:14,064 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 132996 states to 86004 states and 207826 transitions. [2025-04-26 16:59:14,065 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42795 [2025-04-26 16:59:14,201 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 55141 [2025-04-26 16:59:14,202 INFO L74 IsDeterministic]: Start isDeterministic. Operand 86004 states and 207826 transitions. [2025-04-26 16:59:14,202 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:59:14,202 INFO L218 hiAutomatonCegarLoop]: Abstraction has 86004 states and 207826 transitions. [2025-04-26 16:59:14,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86004 states and 207826 transitions. [2025-04-26 16:59:15,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86004 to 79831. [2025-04-26 16:59:15,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79831 states, 79831 states have (on average 2.525998672195012) internal successors, (in total 201653), 79830 states have internal predecessors, (201653), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:16,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79831 states to 79831 states and 201653 transitions. [2025-04-26 16:59:16,466 INFO L240 hiAutomatonCegarLoop]: Abstraction has 79831 states and 201653 transitions. [2025-04-26 16:59:16,466 INFO L438 stractBuchiCegarLoop]: Abstraction has 79831 states and 201653 transitions. [2025-04-26 16:59:16,466 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:59:16,466 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 79831 states and 201653 transitions. [2025-04-26 16:59:16,850 INFO L131 ngComponentsAnalysis]: Automaton has 1809 accepting balls. 20241 [2025-04-26 16:59:16,850 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:59:16,851 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:59:16,851 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-04-26 16:59:16,851 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:59:16,852 INFO L752 eck$LassoCheckResult]: Stem: "[98] $Ultimate##0-->L17: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[165] L17-->L34: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" "[121] L34-->L39: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[123] L39-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[125] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[168] L17-1-->L45: Formula: (and (= v_thread2Thread1of1ForFork3_thidvar0_2 2) (= v_thread2Thread1of1ForFork3_thidvar1_2 2)) InVars {} OutVars{thread2Thread1of1ForFork3_thidvar0=v_thread2Thread1of1ForFork3_thidvar0_2, thread2Thread1of1ForFork3_thidvar1=v_thread2Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork3_thidvar0, thread2Thread1of1ForFork3_thidvar1]" [2025-04-26 16:59:16,852 INFO L754 eck$LassoCheckResult]: Loop: "[128] L45-->L47: Formula: (< v_x2_1 v_z2_1) InVars {z2=v_z2_1, x2=v_x2_1} OutVars{z2=v_z2_1, x2=v_x2_1} AuxVars[] AssignedVars[]" "[130] L47-->L48: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" "[132] L48-->L45: Formula: (= (+ v_c_4 1) v_c_3) InVars {c=v_c_4} OutVars{c=v_c_3} AuxVars[] AssignedVars[c]" [2025-04-26 16:59:16,852 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:16,852 INFO L85 PathProgramCache]: Analyzing trace with hash -445698895, now seen corresponding path program 1 times [2025-04-26 16:59:16,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:16,852 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097775660] [2025-04-26 16:59:16,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:16,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:16,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:59:16,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:59:16,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:16,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:16,857 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:16,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:59:16,859 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:59:16,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:16,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:16,860 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:16,860 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:16,860 INFO L85 PathProgramCache]: Analyzing trace with hash 156961, now seen corresponding path program 1 times [2025-04-26 16:59:16,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:16,860 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454984065] [2025-04-26 16:59:16,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:16,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:16,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:16,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:16,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:16,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:16,863 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:16,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:16,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:16,865 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:16,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:16,866 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:16,866 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:16,866 INFO L85 PathProgramCache]: Analyzing trace with hash -2071741839, now seen corresponding path program 1 times [2025-04-26 16:59:16,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:16,866 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212089496] [2025-04-26 16:59:16,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:16,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:16,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 16:59:16,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 16:59:16,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:16,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:16,873 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:16,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 16:59:16,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 16:59:16,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:16,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:16,878 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:16,900 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:16,900 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:16,900 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:16,900 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:16,901 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:59:16,901 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:16,901 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:16,901 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:16,901 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:59:16,901 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:16,901 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:16,901 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:16,904 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:16,932 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:16,932 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:59:16,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:16,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:16,935 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:16,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-04-26 16:59:16,937 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:16,937 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:16,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:16,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:16,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:16,955 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:16,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-04-26 16:59:16,958 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:16,958 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:16,991 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:59:16,991 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=-3}, {c=-3}, {c=7}] Lambdas: [0, 1, 1] Nus: [1, 0] [2025-04-26 16:59:16,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:16,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:16,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:16,999 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:17,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-04-26 16:59:17,002 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:17,002 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:17,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:17,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:17,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:17,020 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:17,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-04-26 16:59:17,023 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:17,023 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:17,082 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:59:17,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-04-26 16:59:17,086 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:17,086 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:17,086 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:17,086 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:17,086 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:59:17,086 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:17,086 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:17,086 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:17,086 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:59:17,086 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:17,086 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:17,087 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:17,093 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:17,117 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:17,117 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:59:17,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:17,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:17,119 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:17,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-04-26 16:59:17,122 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:59:17,132 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:17,132 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:17,132 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:17,132 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:17,132 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:17,133 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:17,134 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:17,135 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:59:17,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:17,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:17,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:17,142 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:17,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-04-26 16:59:17,145 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:59:17,155 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:17,155 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:17,155 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:17,155 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:17,155 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:17,156 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:17,157 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:17,158 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:59:17,160 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:59:17,160 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:59:17,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:17,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:17,162 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:17,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-04-26 16:59:17,165 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:59:17,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:17,170 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:59:17,170 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:59:17,170 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z2, x2) = 1*z2 - 1*x2 Supporting invariants [] [2025-04-26 16:59:17,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-04-26 16:59:17,176 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:59:17,188 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:17,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:59:17,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:59:17,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:17,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:17,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:59:17,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:17,214 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:17,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:17,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:17,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:17,217 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:59:17,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:59:17,247 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:59:17,247 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 79831 states and 201653 transitions. cyclomatic complexity: 124924 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (in total 9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:18,487 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 79831 states and 201653 transitions. cyclomatic complexity: 124924. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (in total 9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 177061 states and 442296 transitions. Complement of second has 6 states. [2025-04-26 16:59:18,488 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:59:18,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (in total 9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:18,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2025-04-26 16:59:18,489 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 126 transitions. Stem has 6 letters. Loop has 3 letters. [2025-04-26 16:59:18,489 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:18,489 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 126 transitions. Stem has 9 letters. Loop has 3 letters. [2025-04-26 16:59:18,489 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:18,489 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 126 transitions. Stem has 6 letters. Loop has 6 letters. [2025-04-26 16:59:18,489 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:18,489 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 177061 states and 442296 transitions. [2025-04-26 16:59:20,324 INFO L131 ngComponentsAnalysis]: Automaton has 871 accepting balls. 7023 [2025-04-26 16:59:21,176 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 177061 states to 119349 states and 299335 transitions. [2025-04-26 16:59:21,176 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45532 [2025-04-26 16:59:21,276 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 52844 [2025-04-26 16:59:21,276 INFO L74 IsDeterministic]: Start isDeterministic. Operand 119349 states and 299335 transitions. [2025-04-26 16:59:21,277 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:59:21,277 INFO L218 hiAutomatonCegarLoop]: Abstraction has 119349 states and 299335 transitions. [2025-04-26 16:59:21,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119349 states and 299335 transitions. [2025-04-26 16:59:23,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119349 to 112461. [2025-04-26 16:59:23,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112461 states, 112461 states have (on average 2.534354131654529) internal successors, (in total 285016), 112460 states have internal predecessors, (285016), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:23,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112461 states to 112461 states and 285016 transitions. [2025-04-26 16:59:23,955 INFO L240 hiAutomatonCegarLoop]: Abstraction has 112461 states and 285016 transitions. [2025-04-26 16:59:23,955 INFO L438 stractBuchiCegarLoop]: Abstraction has 112461 states and 285016 transitions. [2025-04-26 16:59:23,955 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:59:23,955 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 112461 states and 285016 transitions. [2025-04-26 16:59:24,571 INFO L131 ngComponentsAnalysis]: Automaton has 871 accepting balls. 7023 [2025-04-26 16:59:24,571 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:59:24,571 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:59:24,572 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:59:24,572 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:59:24,572 INFO L752 eck$LassoCheckResult]: Stem: "[98] $Ultimate##0-->L17: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[165] L17-->L34: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" "[121] L34-->L39: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[123] L39-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[125] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[168] L17-1-->L45: Formula: (and (= v_thread2Thread1of1ForFork3_thidvar0_2 2) (= v_thread2Thread1of1ForFork3_thidvar1_2 2)) InVars {} OutVars{thread2Thread1of1ForFork3_thidvar0=v_thread2Thread1of1ForFork3_thidvar0_2, thread2Thread1of1ForFork3_thidvar1=v_thread2Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork3_thidvar0, thread2Thread1of1ForFork3_thidvar1]" "[127] L45-->L50: Formula: (<= v_z2_2 v_x2_4) InVars {z2=v_z2_2, x2=v_x2_4} OutVars{z2=v_z2_2, x2=v_x2_4} AuxVars[] AssignedVars[]" "[129] L50-->thread2FINAL: Formula: (= (+ v_f_4 1) v_f_3) InVars {f=v_f_4} OutVars{f=v_f_3} AuxVars[] AssignedVars[f]" "[131] thread2FINAL-->thread2EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[171] L18-->L56: Formula: (and (= v_thread3Thread1of1ForFork4_thidvar0_2 3) (= v_thread3Thread1of1ForFork4_thidvar1_2 3) (= v_thread3Thread1of1ForFork4_thidvar2_2 3)) InVars {} OutVars{thread3Thread1of1ForFork4_thidvar0=v_thread3Thread1of1ForFork4_thidvar0_2, thread3Thread1of1ForFork4_thidvar1=v_thread3Thread1of1ForFork4_thidvar1_2, thread3Thread1of1ForFork4_thidvar2=v_thread3Thread1of1ForFork4_thidvar2_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork4_thidvar0, thread3Thread1of1ForFork4_thidvar1, thread3Thread1of1ForFork4_thidvar2]" [2025-04-26 16:59:24,573 INFO L754 eck$LassoCheckResult]: Loop: "[134] L56-->L58: Formula: (< v_x3_1 v_z3_1) InVars {z3=v_z3_1, x3=v_x3_1} OutVars{z3=v_z3_1, x3=v_x3_1} AuxVars[] AssignedVars[]" "[136] L58-->L59: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" "[138] L59-->L56: Formula: (= v_c_5 (+ v_c_6 1)) InVars {c=v_c_6} OutVars{c=v_c_5} AuxVars[] AssignedVars[c]" [2025-04-26 16:59:24,573 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:24,573 INFO L85 PathProgramCache]: Analyzing trace with hash 200481819, now seen corresponding path program 1 times [2025-04-26 16:59:24,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:24,573 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450352616] [2025-04-26 16:59:24,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:24,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:24,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 16:59:24,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 16:59:24,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:24,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:24,577 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:24,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 16:59:24,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 16:59:24,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:24,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:24,585 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:24,586 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:24,586 INFO L85 PathProgramCache]: Analyzing trace with hash 162919, now seen corresponding path program 1 times [2025-04-26 16:59:24,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:24,586 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687605850] [2025-04-26 16:59:24,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:24,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:24,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:24,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:24,593 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:24,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:24,593 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:24,593 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:24,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:24,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:24,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:24,595 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:24,601 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:24,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1745505779, now seen corresponding path program 1 times [2025-04-26 16:59:24,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:24,601 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599420279] [2025-04-26 16:59:24,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:24,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:24,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-26 16:59:24,609 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-26 16:59:24,609 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:24,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:24,609 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:24,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-26 16:59:24,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-26 16:59:24,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:24,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:24,622 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:24,650 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:24,650 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:24,650 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:24,650 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:24,650 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:59:24,650 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:24,650 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:24,650 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:24,650 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:59:24,650 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:24,650 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:24,651 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:24,655 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:24,679 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:24,679 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:59:24,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:24,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:24,681 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:24,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-04-26 16:59:24,683 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:24,683 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:24,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:24,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:24,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:24,703 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:24,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-04-26 16:59:24,706 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:24,706 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:24,785 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:59:24,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2025-04-26 16:59:24,793 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:24,793 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:24,794 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:24,795 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:24,795 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:59:24,795 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:24,795 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:24,795 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:24,795 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:59:24,795 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:24,795 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:24,796 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:24,803 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:24,824 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:24,824 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:59:24,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:24,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:24,827 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:24,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-04-26 16:59:24,829 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:59:24,838 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:24,839 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:24,839 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:24,839 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:24,839 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:24,840 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:24,840 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:24,842 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:59:24,845 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:59:24,845 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:59:24,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:24,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:24,847 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:24,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-04-26 16:59:24,849 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:59:24,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:24,852 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:59:24,852 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:59:24,852 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x3, z3) = -1*x3 + 1*z3 Supporting invariants [] [2025-04-26 16:59:24,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:24,858 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:59:24,866 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:24,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 16:59:24,875 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 16:59:24,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:24,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:24,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:59:24,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:24,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:24,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:24,891 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:24,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:24,891 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:59:24,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:24,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:59:24,928 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:59:24,928 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 112461 states and 285016 transitions. cyclomatic complexity: 176195 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (in total 13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:26,854 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 112461 states and 285016 transitions. cyclomatic complexity: 176195. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (in total 13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 263221 states and 660663 transitions. Complement of second has 6 states. [2025-04-26 16:59:26,854 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:59:26,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (in total 13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:26,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2025-04-26 16:59:26,855 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 131 transitions. Stem has 10 letters. Loop has 3 letters. [2025-04-26 16:59:26,855 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:26,855 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 131 transitions. Stem has 13 letters. Loop has 3 letters. [2025-04-26 16:59:26,855 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:26,855 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 131 transitions. Stem has 10 letters. Loop has 6 letters. [2025-04-26 16:59:26,855 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:26,856 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 263221 states and 660663 transitions. [2025-04-26 16:59:29,567 INFO L131 ngComponentsAnalysis]: Automaton has 339 accepting balls. 1971 [2025-04-26 16:59:31,071 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 263221 states to 172183 states and 428210 transitions. [2025-04-26 16:59:31,071 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49670 [2025-04-26 16:59:31,163 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53477 [2025-04-26 16:59:31,163 INFO L74 IsDeterministic]: Start isDeterministic. Operand 172183 states and 428210 transitions. [2025-04-26 16:59:31,163 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:59:31,163 INFO L218 hiAutomatonCegarLoop]: Abstraction has 172183 states and 428210 transitions. [2025-04-26 16:59:31,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172183 states and 428210 transitions. [2025-04-26 16:59:33,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172183 to 167233. [2025-04-26 16:59:33,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167233 states, 167233 states have (on average 2.511442119677336) internal successors, (in total 419996), 167232 states have internal predecessors, (419996), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:34,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167233 states to 167233 states and 419996 transitions. [2025-04-26 16:59:34,545 INFO L240 hiAutomatonCegarLoop]: Abstraction has 167233 states and 419996 transitions. [2025-04-26 16:59:34,545 INFO L438 stractBuchiCegarLoop]: Abstraction has 167233 states and 419996 transitions. [2025-04-26 16:59:34,545 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:59:34,545 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167233 states and 419996 transitions. [2025-04-26 16:59:35,525 INFO L131 ngComponentsAnalysis]: Automaton has 339 accepting balls. 1971 [2025-04-26 16:59:35,525 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:59:35,525 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:59:35,526 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:59:35,526 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:59:35,526 INFO L752 eck$LassoCheckResult]: Stem: "[98] $Ultimate##0-->L17: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[165] L17-->L34: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" "[121] L34-->L39: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[123] L39-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[125] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[168] L17-1-->L45: Formula: (and (= v_thread2Thread1of1ForFork3_thidvar0_2 2) (= v_thread2Thread1of1ForFork3_thidvar1_2 2)) InVars {} OutVars{thread2Thread1of1ForFork3_thidvar0=v_thread2Thread1of1ForFork3_thidvar0_2, thread2Thread1of1ForFork3_thidvar1=v_thread2Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork3_thidvar0, thread2Thread1of1ForFork3_thidvar1]" "[127] L45-->L50: Formula: (<= v_z2_2 v_x2_4) InVars {z2=v_z2_2, x2=v_x2_4} OutVars{z2=v_z2_2, x2=v_x2_4} AuxVars[] AssignedVars[]" "[129] L50-->thread2FINAL: Formula: (= (+ v_f_4 1) v_f_3) InVars {f=v_f_4} OutVars{f=v_f_3} AuxVars[] AssignedVars[f]" "[131] thread2FINAL-->thread2EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[171] L18-->L56: Formula: (and (= v_thread3Thread1of1ForFork4_thidvar0_2 3) (= v_thread3Thread1of1ForFork4_thidvar1_2 3) (= v_thread3Thread1of1ForFork4_thidvar2_2 3)) InVars {} OutVars{thread3Thread1of1ForFork4_thidvar0=v_thread3Thread1of1ForFork4_thidvar0_2, thread3Thread1of1ForFork4_thidvar1=v_thread3Thread1of1ForFork4_thidvar1_2, thread3Thread1of1ForFork4_thidvar2=v_thread3Thread1of1ForFork4_thidvar2_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork4_thidvar0, thread3Thread1of1ForFork4_thidvar1, thread3Thread1of1ForFork4_thidvar2]" "[133] L56-->L61: Formula: (<= v_z3_2 v_x3_4) InVars {z3=v_z3_2, x3=v_x3_4} OutVars{z3=v_z3_2, x3=v_x3_4} AuxVars[] AssignedVars[]" "[135] L61-->thread3FINAL: Formula: (= v_f_5 (+ v_f_6 1)) InVars {f=v_f_6} OutVars{f=v_f_5} AuxVars[] AssignedVars[f]" "[137] thread3FINAL-->thread3EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[174] L19-->$Ultimate##0: Formula: (and (= v_thread4Thread1of1ForFork5_thidvar2_2 4) (= v_thread4Thread1of1ForFork5_thidvar0_2 4) (= v_thread4Thread1of1ForFork5_thidvar1_2 4) (= v_thread4Thread1of1ForFork5_thidvar3_2 4)) InVars {} OutVars{thread4Thread1of1ForFork5_thidvar3=v_thread4Thread1of1ForFork5_thidvar3_2, thread4Thread1of1ForFork5_thidvar2=v_thread4Thread1of1ForFork5_thidvar2_2, thread4Thread1of1ForFork5_thidvar1=v_thread4Thread1of1ForFork5_thidvar1_2, thread4Thread1of1ForFork5_thidvar0=v_thread4Thread1of1ForFork5_thidvar0_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork5_thidvar3, thread4Thread1of1ForFork5_thidvar2, thread4Thread1of1ForFork5_thidvar1, thread4Thread1of1ForFork5_thidvar0]" "[139] $Ultimate##0-->L68-1: Formula: (< 2 v_f_8) InVars {f=v_f_8} OutVars{f=v_f_8} AuxVars[] AssignedVars[]" [2025-04-26 16:59:35,526 INFO L754 eck$LassoCheckResult]: Loop: "[141] L68-1-->L70: Formula: (< v_y1_2 v_z1_4) InVars {y1=v_y1_2, z1=v_z1_4} OutVars{y1=v_y1_2, z1=v_z1_4} AuxVars[] AssignedVars[]" "[143] L70-->L71: Formula: (= v_y1_3 (+ v_y1_4 1)) InVars {y1=v_y1_4} OutVars{y1=v_y1_3} AuxVars[] AssignedVars[y1]" "[144] L71-->L68-1: Formula: (= v_c_8 (+ v_c_7 1)) InVars {c=v_c_8} OutVars{c=v_c_7} AuxVars[] AssignedVars[c]" [2025-04-26 16:59:35,526 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:35,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1900210377, now seen corresponding path program 1 times [2025-04-26 16:59:35,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:35,527 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880626804] [2025-04-26 16:59:35,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:35,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:35,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-26 16:59:35,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-26 16:59:35,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:35,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:35,532 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:35,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-26 16:59:35,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-26 16:59:35,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:35,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:35,536 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:35,536 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:35,536 INFO L85 PathProgramCache]: Analyzing trace with hash 169869, now seen corresponding path program 1 times [2025-04-26 16:59:35,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:35,536 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226486415] [2025-04-26 16:59:35,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:35,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:35,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:35,541 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:35,541 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:35,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:35,541 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:35,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:35,542 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:35,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:35,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:35,543 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:35,543 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:35,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1498520005, now seen corresponding path program 1 times [2025-04-26 16:59:35,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:35,543 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305030429] [2025-04-26 16:59:35,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:35,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:35,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-26 16:59:35,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-26 16:59:35,555 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:35,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:35,555 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:35,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-26 16:59:35,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-26 16:59:35,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:35,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:35,565 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:35,584 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:35,584 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:35,584 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:35,584 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:35,584 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:59:35,584 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:35,584 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:35,584 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:35,584 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:59:35,585 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:35,585 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:35,585 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:35,588 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:35,603 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:35,604 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:59:35,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:35,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:35,605 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:35,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-04-26 16:59:35,607 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:35,607 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:35,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2025-04-26 16:59:35,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:35,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:35,623 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:35,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-04-26 16:59:35,626 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:35,626 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:35,647 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:59:35,647 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=0}, {c=7}, {c=-8}] Lambdas: [0, 1, 1] Nus: [0, 0] [2025-04-26 16:59:35,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2025-04-26 16:59:35,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:35,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:35,654 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:35,655 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:35,655 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:35,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-04-26 16:59:35,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2025-04-26 16:59:35,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:35,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:35,671 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:35,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-04-26 16:59:35,672 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:35,672 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:35,730 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:59:35,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:35,734 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:35,734 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:35,734 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:35,734 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:35,734 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:59:35,734 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:35,734 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:35,734 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:35,734 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:59:35,734 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:35,734 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:35,734 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:35,865 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:35,885 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:35,885 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:59:35,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:35,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:35,887 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:35,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-04-26 16:59:35,889 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:59:35,898 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:35,898 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:35,899 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:35,899 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:35,899 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:35,899 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:35,899 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:35,901 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:59:35,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:35,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:35,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:35,907 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:35,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-04-26 16:59:35,910 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:59:35,918 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:35,918 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:35,919 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:35,919 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:35,919 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:35,919 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:35,919 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:35,921 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:59:35,922 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:59:35,922 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:59:35,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:35,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:35,924 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:35,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2025-04-26 16:59:35,926 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:59:35,929 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:59:35,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2025-04-26 16:59:35,930 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:59:35,930 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:59:35,930 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(y1, z1) = -1*y1 + 1*z1 Supporting invariants [] [2025-04-26 16:59:35,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:35,936 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:59:35,945 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:35,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-26 16:59:35,953 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-26 16:59:35,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:35,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:35,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:59:35,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:35,971 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:35,972 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:35,972 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:35,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:35,972 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:59:35,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:35,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:59:35,997 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:59:35,997 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 167233 states and 419996 transitions. cyclomatic complexity: 257829 Second operand has 4 states, 4 states have (on average 4.5) internal successors, (in total 18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:38,928 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 167233 states and 419996 transitions. cyclomatic complexity: 257829. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (in total 18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 366461 states and 901069 transitions. Complement of second has 6 states. [2025-04-26 16:59:38,936 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:59:38,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.5) internal successors, (in total 18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:38,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2025-04-26 16:59:38,936 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 152 transitions. Stem has 15 letters. Loop has 3 letters. [2025-04-26 16:59:38,937 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:38,937 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 152 transitions. Stem has 18 letters. Loop has 3 letters. [2025-04-26 16:59:38,937 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:38,937 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 152 transitions. Stem has 15 letters. Loop has 6 letters. [2025-04-26 16:59:38,937 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:38,937 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 366461 states and 901069 transitions. [2025-04-26 16:59:42,524 INFO L131 ngComponentsAnalysis]: Automaton has 172 accepting balls. 702 [2025-04-26 16:59:44,265 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 366461 states to 250888 states and 610111 transitions. [2025-04-26 16:59:44,265 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57881 [2025-04-26 16:59:44,606 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 61138 [2025-04-26 16:59:44,607 INFO L74 IsDeterministic]: Start isDeterministic. Operand 250888 states and 610111 transitions. [2025-04-26 16:59:44,607 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:59:44,607 INFO L218 hiAutomatonCegarLoop]: Abstraction has 250888 states and 610111 transitions. [2025-04-26 16:59:44,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250888 states and 610111 transitions. [2025-04-26 16:59:48,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250888 to 244655. [2025-04-26 16:59:48,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244655 states, 244655 states have (on average 2.462479818519957) internal successors, (in total 602458), 244654 states have internal predecessors, (602458), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:49,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244655 states to 244655 states and 602458 transitions. [2025-04-26 16:59:49,755 INFO L240 hiAutomatonCegarLoop]: Abstraction has 244655 states and 602458 transitions. [2025-04-26 16:59:49,755 INFO L438 stractBuchiCegarLoop]: Abstraction has 244655 states and 602458 transitions. [2025-04-26 16:59:49,755 INFO L340 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-04-26 16:59:49,755 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 244655 states and 602458 transitions. [2025-04-26 16:59:51,010 INFO L131 ngComponentsAnalysis]: Automaton has 172 accepting balls. 702 [2025-04-26 16:59:51,010 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:59:51,010 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:59:51,011 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:59:51,011 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:59:51,011 INFO L752 eck$LassoCheckResult]: Stem: "[98] $Ultimate##0-->L17: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[165] L17-->L34: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" "[121] L34-->L39: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[123] L39-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[125] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[168] L17-1-->L45: Formula: (and (= v_thread2Thread1of1ForFork3_thidvar0_2 2) (= v_thread2Thread1of1ForFork3_thidvar1_2 2)) InVars {} OutVars{thread2Thread1of1ForFork3_thidvar0=v_thread2Thread1of1ForFork3_thidvar0_2, thread2Thread1of1ForFork3_thidvar1=v_thread2Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork3_thidvar0, thread2Thread1of1ForFork3_thidvar1]" "[127] L45-->L50: Formula: (<= v_z2_2 v_x2_4) InVars {z2=v_z2_2, x2=v_x2_4} OutVars{z2=v_z2_2, x2=v_x2_4} AuxVars[] AssignedVars[]" "[129] L50-->thread2FINAL: Formula: (= (+ v_f_4 1) v_f_3) InVars {f=v_f_4} OutVars{f=v_f_3} AuxVars[] AssignedVars[f]" "[131] thread2FINAL-->thread2EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[171] L18-->L56: Formula: (and (= v_thread3Thread1of1ForFork4_thidvar0_2 3) (= v_thread3Thread1of1ForFork4_thidvar1_2 3) (= v_thread3Thread1of1ForFork4_thidvar2_2 3)) InVars {} OutVars{thread3Thread1of1ForFork4_thidvar0=v_thread3Thread1of1ForFork4_thidvar0_2, thread3Thread1of1ForFork4_thidvar1=v_thread3Thread1of1ForFork4_thidvar1_2, thread3Thread1of1ForFork4_thidvar2=v_thread3Thread1of1ForFork4_thidvar2_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork4_thidvar0, thread3Thread1of1ForFork4_thidvar1, thread3Thread1of1ForFork4_thidvar2]" "[133] L56-->L61: Formula: (<= v_z3_2 v_x3_4) InVars {z3=v_z3_2, x3=v_x3_4} OutVars{z3=v_z3_2, x3=v_x3_4} AuxVars[] AssignedVars[]" "[135] L61-->thread3FINAL: Formula: (= v_f_5 (+ v_f_6 1)) InVars {f=v_f_6} OutVars{f=v_f_5} AuxVars[] AssignedVars[f]" "[137] thread3FINAL-->thread3EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[174] L19-->$Ultimate##0: Formula: (and (= v_thread4Thread1of1ForFork5_thidvar2_2 4) (= v_thread4Thread1of1ForFork5_thidvar0_2 4) (= v_thread4Thread1of1ForFork5_thidvar1_2 4) (= v_thread4Thread1of1ForFork5_thidvar3_2 4)) InVars {} OutVars{thread4Thread1of1ForFork5_thidvar3=v_thread4Thread1of1ForFork5_thidvar3_2, thread4Thread1of1ForFork5_thidvar2=v_thread4Thread1of1ForFork5_thidvar2_2, thread4Thread1of1ForFork5_thidvar1=v_thread4Thread1of1ForFork5_thidvar1_2, thread4Thread1of1ForFork5_thidvar0=v_thread4Thread1of1ForFork5_thidvar0_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork5_thidvar3, thread4Thread1of1ForFork5_thidvar2, thread4Thread1of1ForFork5_thidvar1, thread4Thread1of1ForFork5_thidvar0]" "[139] $Ultimate##0-->L68-1: Formula: (< 2 v_f_8) InVars {f=v_f_8} OutVars{f=v_f_8} AuxVars[] AssignedVars[]" "[140] L68-1-->thread4FINAL: Formula: (<= v_z1_3 v_y1_1) InVars {y1=v_y1_1, z1=v_z1_3} OutVars{y1=v_y1_1, z1=v_z1_3} AuxVars[] AssignedVars[]" "[142] thread4FINAL-->thread4EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[159] L20-->$Ultimate##0: Formula: (and (= 5 v_thread5Thread1of1ForFork0_thidvar4_2) (= 5 v_thread5Thread1of1ForFork0_thidvar3_2) (= 5 v_thread5Thread1of1ForFork0_thidvar2_2) (= 5 v_thread5Thread1of1ForFork0_thidvar1_2) (= 5 v_thread5Thread1of1ForFork0_thidvar0_2)) InVars {} OutVars{thread5Thread1of1ForFork0_thidvar4=v_thread5Thread1of1ForFork0_thidvar4_2, thread5Thread1of1ForFork0_thidvar3=v_thread5Thread1of1ForFork0_thidvar3_2, thread5Thread1of1ForFork0_thidvar2=v_thread5Thread1of1ForFork0_thidvar2_2, thread5Thread1of1ForFork0_thidvar1=v_thread5Thread1of1ForFork0_thidvar1_2, thread5Thread1of1ForFork0_thidvar0=v_thread5Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread5Thread1of1ForFork0_thidvar4, thread5Thread1of1ForFork0_thidvar3, thread5Thread1of1ForFork0_thidvar2, thread5Thread1of1ForFork0_thidvar1, thread5Thread1of1ForFork0_thidvar0]" "[145] $Ultimate##0-->L79-1: Formula: (< 2 v_f_9) InVars {f=v_f_9} OutVars{f=v_f_9} AuxVars[] AssignedVars[]" [2025-04-26 16:59:51,012 INFO L754 eck$LassoCheckResult]: Loop: "[147] L79-1-->L81: Formula: (< v_y2_1 v_z2_3) InVars {z2=v_z2_3, y2=v_y2_1} OutVars{z2=v_z2_3, y2=v_y2_1} AuxVars[] AssignedVars[]" "[149] L81-->L82: Formula: (= v_y2_2 (+ v_y2_3 1)) InVars {y2=v_y2_3} OutVars{y2=v_y2_2} AuxVars[] AssignedVars[y2]" "[150] L82-->L79-1: Formula: (= (+ v_c_9 1) v_c_10) InVars {c=v_c_10} OutVars{c=v_c_9} AuxVars[] AssignedVars[c]" [2025-04-26 16:59:51,012 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:51,012 INFO L85 PathProgramCache]: Analyzing trace with hash -790550243, now seen corresponding path program 1 times [2025-04-26 16:59:51,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:51,012 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054930951] [2025-04-26 16:59:51,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:51,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:51,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-26 16:59:51,018 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-26 16:59:51,018 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:51,018 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:51,018 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:51,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-26 16:59:51,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-26 16:59:51,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:51,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:51,027 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:51,027 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:51,027 INFO L85 PathProgramCache]: Analyzing trace with hash 175827, now seen corresponding path program 1 times [2025-04-26 16:59:51,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:51,027 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099767483] [2025-04-26 16:59:51,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:51,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:51,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:51,029 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:51,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:51,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:51,029 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:51,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:51,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:51,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:51,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:51,030 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:51,031 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:51,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1976459209, now seen corresponding path program 1 times [2025-04-26 16:59:51,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:51,031 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771744301] [2025-04-26 16:59:51,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:51,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:51,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-26 16:59:51,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-26 16:59:51,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:51,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:51,035 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:51,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-26 16:59:51,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-26 16:59:51,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:51,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:51,040 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:51,055 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:51,055 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:51,055 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:51,055 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:51,055 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:59:51,055 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:51,055 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:51,055 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:51,055 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6.c.bpl_petrified1_Iteration5_Loop [2025-04-26 16:59:51,055 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:51,055 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:51,055 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:51,057 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:51,074 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:51,074 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:59:51,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:51,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:51,076 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:51,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2025-04-26 16:59:51,080 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:51,080 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:51,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2025-04-26 16:59:51,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:51,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:51,095 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:51,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2025-04-26 16:59:51,096 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:51,096 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:51,116 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:59:51,116 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=0}, {c=7}, {c=-8}] Lambdas: [0, 1, 1] Nus: [0, 0] [2025-04-26 16:59:51,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2025-04-26 16:59:51,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:51,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:51,123 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:51,124 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:51,124 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:51,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2025-04-26 16:59:51,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2025-04-26 16:59:51,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:51,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:51,142 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:51,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2025-04-26 16:59:51,144 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:51,144 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:51,197 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:59:51,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2025-04-26 16:59:51,201 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:51,201 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:51,201 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:51,201 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:51,201 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:59:51,201 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:51,201 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:51,201 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:51,201 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6.c.bpl_petrified1_Iteration5_Loop [2025-04-26 16:59:51,201 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:51,201 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:51,202 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:51,206 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:51,225 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:51,225 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:59:51,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:51,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:51,227 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:51,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2025-04-26 16:59:51,231 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:59:51,239 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:51,239 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:51,239 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:51,239 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:51,239 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:51,240 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:51,240 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:51,241 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:59:51,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2025-04-26 16:59:51,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:51,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:51,248 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:51,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2025-04-26 16:59:51,249 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:59:51,258 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:51,258 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:51,258 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:51,258 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:51,259 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:51,259 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:51,259 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:51,261 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:59:51,263 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:59:51,263 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:59:51,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:51,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:51,265 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:51,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2025-04-26 16:59:51,266 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:59:51,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:51,270 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:59:51,270 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:59:51,270 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(y2, z2) = -1*y2 + 1*z2 Supporting invariants [] [2025-04-26 16:59:51,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2025-04-26 16:59:51,276 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:59:51,283 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:51,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-26 16:59:51,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-26 16:59:51,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:51,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:51,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:59:51,293 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:51,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:51,326 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:51,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:51,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:51,326 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:59:51,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:51,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:59:51,349 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:59:51,349 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 244655 states and 602458 transitions. cyclomatic complexity: 364753 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (in total 22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:54,766 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 244655 states and 602458 transitions. cyclomatic complexity: 364753. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (in total 22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 539847 states and 1305235 transitions. Complement of second has 6 states. [2025-04-26 16:59:54,767 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:59:54,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (in total 22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:54,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2025-04-26 16:59:54,767 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 151 transitions. Stem has 19 letters. Loop has 3 letters. [2025-04-26 16:59:54,767 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:54,767 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 151 transitions. Stem has 22 letters. Loop has 3 letters. [2025-04-26 16:59:54,768 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:54,768 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 151 transitions. Stem has 19 letters. Loop has 6 letters. [2025-04-26 16:59:54,768 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:54,768 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 539847 states and 1305235 transitions. [2025-04-26 16:59:59,838 INFO L131 ngComponentsAnalysis]: Automaton has 63 accepting balls. 189 [2025-04-26 17:00:01,930 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 539847 states to 311452 states and 745980 transitions. [2025-04-26 17:00:01,930 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 58895 [2025-04-26 17:00:02,041 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60809 [2025-04-26 17:00:02,041 INFO L74 IsDeterministic]: Start isDeterministic. Operand 311452 states and 745980 transitions. [2025-04-26 17:00:02,042 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 17:00:02,042 INFO L218 hiAutomatonCegarLoop]: Abstraction has 311452 states and 745980 transitions. [2025-04-26 17:00:02,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311452 states and 745980 transitions. [2025-04-26 17:00:06,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311452 to 303639. [2025-04-26 17:00:07,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303639 states, 303639 states have (on average 2.421240354499916) internal successors, (in total 735183), 303638 states have internal predecessors, (735183), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 17:00:08,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303639 states to 303639 states and 735183 transitions. [2025-04-26 17:00:08,244 INFO L240 hiAutomatonCegarLoop]: Abstraction has 303639 states and 735183 transitions. [2025-04-26 17:00:08,244 INFO L438 stractBuchiCegarLoop]: Abstraction has 303639 states and 735183 transitions. [2025-04-26 17:00:08,244 INFO L340 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-04-26 17:00:08,244 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 303639 states and 735183 transitions. [2025-04-26 17:00:09,891 INFO L131 ngComponentsAnalysis]: Automaton has 63 accepting balls. 189 [2025-04-26 17:00:09,892 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 17:00:09,892 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 17:00:09,893 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 17:00:09,893 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 17:00:09,893 INFO L752 eck$LassoCheckResult]: Stem: "[98] $Ultimate##0-->L17: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[165] L17-->L34: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" "[121] L34-->L39: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[123] L39-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[125] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[168] L17-1-->L45: Formula: (and (= v_thread2Thread1of1ForFork3_thidvar0_2 2) (= v_thread2Thread1of1ForFork3_thidvar1_2 2)) InVars {} OutVars{thread2Thread1of1ForFork3_thidvar0=v_thread2Thread1of1ForFork3_thidvar0_2, thread2Thread1of1ForFork3_thidvar1=v_thread2Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork3_thidvar0, thread2Thread1of1ForFork3_thidvar1]" "[127] L45-->L50: Formula: (<= v_z2_2 v_x2_4) InVars {z2=v_z2_2, x2=v_x2_4} OutVars{z2=v_z2_2, x2=v_x2_4} AuxVars[] AssignedVars[]" "[129] L50-->thread2FINAL: Formula: (= (+ v_f_4 1) v_f_3) InVars {f=v_f_4} OutVars{f=v_f_3} AuxVars[] AssignedVars[f]" "[131] thread2FINAL-->thread2EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[171] L18-->L56: Formula: (and (= v_thread3Thread1of1ForFork4_thidvar0_2 3) (= v_thread3Thread1of1ForFork4_thidvar1_2 3) (= v_thread3Thread1of1ForFork4_thidvar2_2 3)) InVars {} OutVars{thread3Thread1of1ForFork4_thidvar0=v_thread3Thread1of1ForFork4_thidvar0_2, thread3Thread1of1ForFork4_thidvar1=v_thread3Thread1of1ForFork4_thidvar1_2, thread3Thread1of1ForFork4_thidvar2=v_thread3Thread1of1ForFork4_thidvar2_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork4_thidvar0, thread3Thread1of1ForFork4_thidvar1, thread3Thread1of1ForFork4_thidvar2]" "[133] L56-->L61: Formula: (<= v_z3_2 v_x3_4) InVars {z3=v_z3_2, x3=v_x3_4} OutVars{z3=v_z3_2, x3=v_x3_4} AuxVars[] AssignedVars[]" "[135] L61-->thread3FINAL: Formula: (= v_f_5 (+ v_f_6 1)) InVars {f=v_f_6} OutVars{f=v_f_5} AuxVars[] AssignedVars[f]" "[137] thread3FINAL-->thread3EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[174] L19-->$Ultimate##0: Formula: (and (= v_thread4Thread1of1ForFork5_thidvar2_2 4) (= v_thread4Thread1of1ForFork5_thidvar0_2 4) (= v_thread4Thread1of1ForFork5_thidvar1_2 4) (= v_thread4Thread1of1ForFork5_thidvar3_2 4)) InVars {} OutVars{thread4Thread1of1ForFork5_thidvar3=v_thread4Thread1of1ForFork5_thidvar3_2, thread4Thread1of1ForFork5_thidvar2=v_thread4Thread1of1ForFork5_thidvar2_2, thread4Thread1of1ForFork5_thidvar1=v_thread4Thread1of1ForFork5_thidvar1_2, thread4Thread1of1ForFork5_thidvar0=v_thread4Thread1of1ForFork5_thidvar0_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork5_thidvar3, thread4Thread1of1ForFork5_thidvar2, thread4Thread1of1ForFork5_thidvar1, thread4Thread1of1ForFork5_thidvar0]" "[139] $Ultimate##0-->L68-1: Formula: (< 2 v_f_8) InVars {f=v_f_8} OutVars{f=v_f_8} AuxVars[] AssignedVars[]" "[140] L68-1-->thread4FINAL: Formula: (<= v_z1_3 v_y1_1) InVars {y1=v_y1_1, z1=v_z1_3} OutVars{y1=v_y1_1, z1=v_z1_3} AuxVars[] AssignedVars[]" "[142] thread4FINAL-->thread4EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[159] L20-->$Ultimate##0: Formula: (and (= 5 v_thread5Thread1of1ForFork0_thidvar4_2) (= 5 v_thread5Thread1of1ForFork0_thidvar3_2) (= 5 v_thread5Thread1of1ForFork0_thidvar2_2) (= 5 v_thread5Thread1of1ForFork0_thidvar1_2) (= 5 v_thread5Thread1of1ForFork0_thidvar0_2)) InVars {} OutVars{thread5Thread1of1ForFork0_thidvar4=v_thread5Thread1of1ForFork0_thidvar4_2, thread5Thread1of1ForFork0_thidvar3=v_thread5Thread1of1ForFork0_thidvar3_2, thread5Thread1of1ForFork0_thidvar2=v_thread5Thread1of1ForFork0_thidvar2_2, thread5Thread1of1ForFork0_thidvar1=v_thread5Thread1of1ForFork0_thidvar1_2, thread5Thread1of1ForFork0_thidvar0=v_thread5Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread5Thread1of1ForFork0_thidvar4, thread5Thread1of1ForFork0_thidvar3, thread5Thread1of1ForFork0_thidvar2, thread5Thread1of1ForFork0_thidvar1, thread5Thread1of1ForFork0_thidvar0]" "[145] $Ultimate##0-->L79-1: Formula: (< 2 v_f_9) InVars {f=v_f_9} OutVars{f=v_f_9} AuxVars[] AssignedVars[]" "[146] L79-1-->thread5FINAL: Formula: (<= v_z2_4 v_y2_4) InVars {z2=v_z2_4, y2=v_y2_4} OutVars{z2=v_z2_4, y2=v_y2_4} AuxVars[] AssignedVars[]" "[148] thread5FINAL-->thread5EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[162] L21-->$Ultimate##0: Formula: (and (= 6 v_thread6Thread1of1ForFork1_thidvar1_2) (= 6 v_thread6Thread1of1ForFork1_thidvar3_2) (= 6 v_thread6Thread1of1ForFork1_thidvar0_2) (= 6 v_thread6Thread1of1ForFork1_thidvar2_2) (= 6 v_thread6Thread1of1ForFork1_thidvar5_2) (= 6 v_thread6Thread1of1ForFork1_thidvar4_2)) InVars {} OutVars{thread6Thread1of1ForFork1_thidvar2=v_thread6Thread1of1ForFork1_thidvar2_2, thread6Thread1of1ForFork1_thidvar3=v_thread6Thread1of1ForFork1_thidvar3_2, thread6Thread1of1ForFork1_thidvar0=v_thread6Thread1of1ForFork1_thidvar0_2, thread6Thread1of1ForFork1_thidvar1=v_thread6Thread1of1ForFork1_thidvar1_2, thread6Thread1of1ForFork1_thidvar4=v_thread6Thread1of1ForFork1_thidvar4_2, thread6Thread1of1ForFork1_thidvar5=v_thread6Thread1of1ForFork1_thidvar5_2} AuxVars[] AssignedVars[thread6Thread1of1ForFork1_thidvar2, thread6Thread1of1ForFork1_thidvar3, thread6Thread1of1ForFork1_thidvar0, thread6Thread1of1ForFork1_thidvar1, thread6Thread1of1ForFork1_thidvar4, thread6Thread1of1ForFork1_thidvar5]" "[151] $Ultimate##0-->L90-1: Formula: (< 2 v_f_10) InVars {f=v_f_10} OutVars{f=v_f_10} AuxVars[] AssignedVars[]" [2025-04-26 17:00:09,893 INFO L754 eck$LassoCheckResult]: Loop: "[153] L90-1-->L92: Formula: (< v_y3_1 v_z3_3) InVars {z3=v_z3_3, y3=v_y3_1} OutVars{z3=v_z3_3, y3=v_y3_1} AuxVars[] AssignedVars[]" "[155] L92-->L93: Formula: (= (+ v_y3_3 1) v_y3_2) InVars {y3=v_y3_3} OutVars{y3=v_y3_2} AuxVars[] AssignedVars[y3]" "[156] L93-->L90-1: Formula: (= (+ v_c_11 1) v_c_12) InVars {c=v_c_12} OutVars{c=v_c_11} AuxVars[] AssignedVars[c]" [2025-04-26 17:00:09,893 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 17:00:09,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1140723564, now seen corresponding path program 1 times [2025-04-26 17:00:09,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 17:00:09,893 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312345838] [2025-04-26 17:00:09,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 17:00:09,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 17:00:09,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-26 17:00:09,898 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-26 17:00:09,898 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 17:00:09,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 17:00:09,898 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 17:00:09,899 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-26 17:00:09,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-26 17:00:09,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 17:00:09,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 17:00:09,903 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 17:00:09,903 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 17:00:09,903 INFO L85 PathProgramCache]: Analyzing trace with hash 181785, now seen corresponding path program 1 times [2025-04-26 17:00:09,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 17:00:09,903 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613506123] [2025-04-26 17:00:09,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 17:00:09,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 17:00:09,904 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 17:00:09,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 17:00:09,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 17:00:09,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 17:00:09,905 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 17:00:09,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 17:00:09,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 17:00:09,906 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 17:00:09,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 17:00:09,906 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 17:00:09,907 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 17:00:09,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1514297178, now seen corresponding path program 1 times [2025-04-26 17:00:09,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 17:00:09,907 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259329332] [2025-04-26 17:00:09,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 17:00:09,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 17:00:09,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-26 17:00:09,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-26 17:00:09,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 17:00:09,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 17:00:09,912 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 17:00:09,915 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-26 17:00:09,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-26 17:00:09,922 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 17:00:09,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 17:00:09,931 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 17:00:09,958 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 17:00:09,958 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 17:00:09,958 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 17:00:09,958 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 17:00:09,958 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 17:00:09,958 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 17:00:09,958 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 17:00:09,958 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 17:00:09,958 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6.c.bpl_petrified1_Iteration6_Loop [2025-04-26 17:00:09,958 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 17:00:09,958 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 17:00:09,958 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 17:00:09,968 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 17:00:09,985 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 17:00:09,985 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 17:00:09,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 17:00:09,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 17:00:09,987 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 17:00:09,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2025-04-26 17:00:09,991 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 17:00:09,991 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 17:00:10,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2025-04-26 17:00:10,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 17:00:10,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 17:00:10,007 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 17:00:10,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2025-04-26 17:00:10,010 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 17:00:10,010 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 17:00:10,065 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 17:00:10,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2025-04-26 17:00:10,069 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 17:00:10,069 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 17:00:10,069 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 17:00:10,069 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 17:00:10,069 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 17:00:10,069 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 17:00:10,069 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 17:00:10,069 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 17:00:10,069 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc6.c.bpl_petrified1_Iteration6_Loop [2025-04-26 17:00:10,069 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 17:00:10,069 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 17:00:10,071 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 17:00:10,075 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 17:00:10,094 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 17:00:10,094 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 17:00:10,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 17:00:10,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 17:00:10,096 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 17:00:10,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2025-04-26 17:00:10,098 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 17:00:10,107 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 17:00:10,107 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 17:00:10,107 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 17:00:10,107 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 17:00:10,107 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 17:00:10,107 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 17:00:10,107 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 17:00:10,109 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 17:00:10,111 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 17:00:10,111 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 17:00:10,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 17:00:10,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 17:00:10,112 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 17:00:10,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2025-04-26 17:00:10,113 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 17:00:10,116 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 17:00:10,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2025-04-26 17:00:10,116 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 17:00:10,116 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 17:00:10,116 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z3, y3) = 1*z3 - 1*y3 Supporting invariants [] [2025-04-26 17:00:10,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2025-04-26 17:00:10,122 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 17:00:10,131 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 17:00:10,137 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-26 17:00:10,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-26 17:00:10,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 17:00:10,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 17:00:10,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 17:00:10,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 17:00:10,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 17:00:10,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 17:00:10,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 17:00:10,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 17:00:10,173 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 17:00:10,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 17:00:10,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 17:00:10,196 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 17:00:10,196 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 303639 states and 735183 transitions. cyclomatic complexity: 439613 Second operand has 4 states, 4 states have (on average 6.5) internal successors, (in total 26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0)